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首页> 外文期刊>Journal of Materials Research and Technology >Mechanical properties of composites with graphene oxide functionalization of either epoxy matrix or curaua fiber reinforcement
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Mechanical properties of composites with graphene oxide functionalization of either epoxy matrix or curaua fiber reinforcement

机译：环氧氧化物官能化的复合材料的机械性能，环氧树脂基质或油桃纤维增强剂

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摘要

In the present work, two types of composites were produced, both reinforced with 30?vol% of curaua fibers (CF). In the first type, only the fiber was functionalized with graphene oxide (GO), producing the GOCF/EM composite. While in the second, only the epoxy matrix (EM) was functionalized, producing the CF/GOEM composite. The objective of the work was to investigate the influence of functionalization with GO on the tensile properties of these produced composites. In comparison with the non GO-functionalized composite, as control CF/EM, the results revealed an increase in yield strength (64%), tensile strength (40%), Young's modulus (60%) and toughness (28%) of the CF/GOEM composite. The GOCF/EM composites for which the fibers were functionalized with GO also performed better than the CF/EM composite. The ANOVA and Tukey tests confirm this increase. As for ductility, within the standard deviation, no change was observed between samples functionalized by GO and those from the control. For the first time, comparing the results of the composites, it was demonstrated that a polymer matrix functionalized by GO offers superior tensile performance compared to the other types, keeping the same GO concentration in the composite. This fact is corroborated by the analysis of the corresponding fracture mechanisms. Preliminary results of composite with simultaneous functionalization of both fiber and epoxy matrix failed to present superior properties. This might be attributed to high amount of GO, which is apparently not a good reinforcement as the curaua fiber.
机译：在本作工作中，生产两种类型的复合材料，两种类型的加固30β纤维（CF）。在第一型中，只有纤维用石墨烯氧化物（GO）官能化，产生GOCF / EM复合材料。虽然在第二个中，仅官能化环氧基质（EM），产生CF / Goem复合材料。该工作的目的是探讨官能化对这些产生的复合材料的拉伸性能的影响。与非官能化复合材料相比，作为对照CF / EM，结果显示屈服强度（64％），拉伸强度（40％），杨氏模量（60％）和韧性（28％）的增加增加CF / Goem复合。使用纤维的GOCF / EM复合材料还通过GO官能化而不是CF / EM复合材料进行。 ANOVA和TUKEY测试确认此增加。至于延展性，在标准偏差内，通过去的样品与来自控制的样品之间的样品没有观察到变化。首次比较复合材料的结果，证明了通过GO官能化的聚合物基质与其他类型相比提供出色的拉伸性能，保持复合材料中相同的GO浓度。通过对相应的断裂机制的分析来证实这一事实。具有纤维和环氧基质同时官能化的复合材料的初步结果未呈现优异的性质。这可能归因于大量的Go，这显然不是良好的加固作为Curaua纤维。

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